Apparatus and method for determining a predetermined characteristic related to an artificial bandwidth limitation processing of an audio signal

US12067995B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Patrick Gampp · Erlangen, DE
• Christian Uhle · Nuremberg, DE
• Julia Havenstein · Nuremberg, DE
• Oliver Hellmuth · Erlangen, DE
• Sascha Disch · Bad Mergentheim, DE
• Antonios Karampourniotis · Nuremberg, DE
• Juergen Herre · Erlangen, DE
• Peter Prokein · Erlangen, DE

Key dates

• Filing date: Sep 25, 2019
• Grant date: Aug 20, 2024
• Expiry date: Mar 22, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03G3/20
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for determining a predetermined characteristic related to an artificial bandwidth limitation processing of an audio signal has a slope evaluator configured for evaluating a slope of a spectrum of the audio signal to obtain a slope evaluation result. The apparatus has a frequency evaluator configured for evaluating a cut-off frequency of the spectrum of the audio signal to obtain a frequency evaluation result, and has a processor for providing an information indicating that the audio signal has the predetermined characteristic dependent on an evaluation of the slope evaluation result and an evaluation of the frequency evaluation result.